HPAA features excellent chemical stability, resistant to hydrolysis and acid‑alkali degradation. Safe and non‑polluting, it improves the solubility of zinc salts and delivers superior corrosion inhibition performance compared with HEDP and EDTMP.
Alias: Phosphono Hydroxy Acetic Acid
Molecular Formula: C₂H₅O₆P
Relative Molecular Mass: 156
HPAA features excellent chemical stability, resistant to hydrolysis and acid‑alkali degradation. Safe and non‑polluting, it improves the solubility of zinc salts and delivers superior corrosion inhibition performance compared with HEDP and EDTMP.
Mainly used as cathodic corrosion inhibitor for metals, it is widely applied for corrosion and scale inhibition in circulating cooling water systems of steel, petrochemical, power, pharmaceutical and other industries. It is suitable for corrosion inhibition under low‑hardness and corrosive water quality in southern China.
| Item | HG/T 3926‑2021 |
|---|---|
| Appearance | Dark brown liquid |
| Solid Content % | ≥45.0 |
| Organophosphorus (as PO₄³⁻) % | ≥27.5 |
| Phosphoric Acid (as PO₄³⁻) % | ≤1.5 |
| Phosphorous Acid (as PO₃³⁻) % | ≤3.0 |
| Chloride (as Cl) mass fraction % | ≤1.0 |
| Iron (Fe) mass fraction, ug/g | ≤25 |
| Density (20℃) g/cm³ | ≥1.30 |
| pH value (10g/L aqueous solution) | ≤3.0 |
HPAA forms high‑performance organic corrosion‑scale inhibitor when compounded with low‑molecular‑weight polymers. Better performance can be achieved when combined with zinc salts.
Packed in plastic drums, 30 kg per drum. Store indoors in cool place. Shelf life: 12 months.
HPAA is acidic liquid. Take labor‑protection measures during operation. Avoid contact with skin and eyes. Rinse immediately with plenty of clean water upon contact.
Alias: Phosphono Hydroxy Acetic Acid
Molecular Formula: C₂H₅O₆P
Relative Molecular Mass: 156
HPAA features excellent chemical stability, resistant to hydrolysis and acid‑alkali degradation. Safe and non‑polluting, it improves the solubility of zinc salts and delivers superior corrosion inhibition performance compared with HEDP and EDTMP.
Mainly used as cathodic corrosion inhibitor for metals, it is widely applied for corrosion and scale inhibition in circulating cooling water systems of steel, petrochemical, power, pharmaceutical and other industries. It is suitable for corrosion inhibition under low‑hardness and corrosive water quality in southern China.
| Item | HG/T 3926‑2021 |
|---|---|
| Appearance | Dark brown liquid |
| Solid Content % | ≥45.0 |
| Organophosphorus (as PO₄³⁻) % | ≥27.5 |
| Phosphoric Acid (as PO₄³⁻) % | ≤1.5 |
| Phosphorous Acid (as PO₃³⁻) % | ≤3.0 |
| Chloride (as Cl) mass fraction % | ≤1.0 |
| Iron (Fe) mass fraction, ug/g | ≤25 |
| Density (20℃) g/cm³ | ≥1.30 |
| pH value (10g/L aqueous solution) | ≤3.0 |
HPAA forms high‑performance organic corrosion‑scale inhibitor when compounded with low‑molecular‑weight polymers. Better performance can be achieved when combined with zinc salts.
Packed in plastic drums, 30 kg per drum. Store indoors in cool place. Shelf life: 12 months.
HPAA is acidic liquid. Take labor‑protection measures during operation. Avoid contact with skin and eyes. Rinse immediately with plenty of clean water upon contact.
